"If you believe that the defendant, acting as a reasonably prudent man, just before he made the assault on Jim Wallis, honestly believed that the same said Jim Wallis was taking undue liberties with the person of his daughter, Effie, thereby by his wiles and blandishments to deprive her of chastity, that he had a right to act upon such appearances, and if necessary, to slay the said Jim Wallis to preserve his daughter's chastity, he could legally do so."
So I've heard of shotgun weddings. But the right to shoot someone for thinking he is going to seduce your daughter?